Rate of fire: 5-15 BPS... Good up to 12-13 with Revy, starts chopping at higher. 12 BPS at the target range or chrono is usually good for turning heads. : )

Rubber grips- fits nicely in big hands like mine

Mouse-click light trigger... very short trigger pull.

Puts a LOT of paint downrange in a hurry.

Easy installation, fits right onto the stock gun

easy to read menu on the lcd

Buttons on backside of frame- no need to remove grip to play with dipswitches.

easy to move between modes of fire, and the tourney switch for semi-only.

Weaknesses:

the battery/charger. Not real fond of having to put my marker in the car to charge it up... 8 hours minimum. Also- continual battery drain, even if it's "off". remove the battery to solve this.

Trigger adjustment hex screw (directly in front of the trigger on top of frame) sticks out 1/16 of an inch, but it won't allow proper seating against the frame of the gun... it rocks on the screw. Slight Dremel work, and it's an afterthought.

Electronic innards are not waterproof. just be careful here, and this is also an afterthought.

Solenoid was initally bound against the sear. the sear tripped, but wouldn't cycle open- a quick 1/4 turn on the two hex screws to either side to loosen it, and it worked perfectly. Not a minus, if you're not afraid of minor tinkering.

Minor faults out of the box, but not enough to overcome the positives of this trigger frame.

Conclusion:

Overall... this is a great trigger frame. I bought it for $129 and I'm really pleased with it. I'd take this frame over a Mako Storm- it's essentially the same trigger frame, but this one has rubber grips vs. cheap plastic grips. Got a chance to pick one of these up? Get it. Is it 100%% necessary? of course not... but... it's nice to have.